Hydraulic dynamic bearing and spindle motor and rotary assembly provided
    2.
    发明授权
    Hydraulic dynamic bearing and spindle motor and rotary assembly provided 失效
    提供液压动力轴承和主轴电机和旋转组件

    公开(公告)号:US06371650B1

    公开(公告)日:2002-04-16

    申请号:US09414244

    申请日:1999-10-07

    IPC分类号: F16C3206

    摘要: A double sleeve type dynamic bearing comprises a fixed shaft having at least one end fixedly mountable to an apparatus in which the bearing is utilized, a rotary sleeve arranged coaxially with the fixed shaft so that a first fine gap is formed therebetween, a fixed sleeve arranged coaxially with the rotary sleeve so that a second fine gap is formed therebetween, and a lubrication oil filled in the fine gaps. The first fine gap and the second fine gap each have an open end exposed to air outside the bearing and an opposite end that is not exposed to the air, the opposite ends being in communication with each other. A holding member holds the fixed shaft and the fixed sleeve and is disposed adjacent to a lower end surface of the rotary sleeve to form a third fine gap between the holding member and the lower end surface of the rotary sleeve. The third fine gap is formed with a thrust dynamic pressure producing groove, and opposite ends of the first and second fine gaps meet each other through the third fine gap. A peripheral surface of at least one of the fixed shaft, the rotary sleeve and the fixed sleeve forming at least one of the first and second fine gaps has a dynamic pressure producing groove formed therein.

    摘要翻译: 一种双套筒式动态轴承,包括固定轴,该固定轴具有固定地安装到使用轴承的装置的至少一个端部,与固定轴同轴设置的旋转套筒,使得在其间形成有第一细小间隙,固定套筒布置 与旋转套筒同轴,从而在它们之间形成第二细微间隙,并且填充有细小间隙的润滑油。 第一细间隙和第二细间隙各自具有暴露于轴承外部的空气的开口端和不暴露于空气的相对端,相对端彼此连通。 保持构件保持固定轴和固定套筒并且邻近旋转套筒的下端表面设置,以在保持构件和旋转套筒的下端表面之间形成第三细微间隙。 第三细间隙由推力动压产生槽形成,第一和第二细缝的相对端通过第三细间隙相互相交。 固定轴,旋转套筒和形成第一和第二细小间隙中的至少一个的固定套筒中的至少一个的周面具有形成在其中的动压产生槽。

    Hydraulic dynamic bearing and spindle motor and rotary assembly provided
    3.
    发明授权
    Hydraulic dynamic bearing and spindle motor and rotary assembly provided 有权
    提供液压动力轴承和主轴电机和旋转组件

    公开(公告)号:US06307291B1

    公开(公告)日:2001-10-23

    申请号:US09414243

    申请日:1999-10-07

    IPC分类号: H02K516

    摘要: The present invention is a double sleeve type fluid dynamic pressure bearing, comprising a fixed shaft having respective ends to be fixed to a utilized apparatus; a rotary sleeve arranged to provide a first fine gap between an inner peripheral surface thereof and an outer peripheral surface of the fixed shaft, a fixed sleeve arranged to provide a second fine gap between an inner peripheral surface thereof and an outer peripheral surface of the rotary sleeve, a holder member arranged to cooperate with a lower end surface of the rotary sleeve to provide a third gap, and wherein the first fine gap and the second fine gap are formed with radial dynamic pressure producing grooves while the third fine gap is formed with a thrust dynamic pressure producing groove, the first, second and third fine gaps being filled with lubrication oil, the first fine gap and the second fine gap having one ends made as opening ends contacting with the air and the other ends made as closed ends communicated with each other through the third fine gap.

    摘要翻译: 本发明是一种双套筒式流体动压轴承,其特征在于,包括一固定轴,该固定轴具有固定在所使用的装置上的各自端部; 旋转套筒,其布置成在其内周表面和固定轴的外周表面之间提供第一细微间隙;固定套筒,其布置成在其内周表面和旋转体的外周表面之间提供第二细微间隙 套筒,配置成与旋转套筒的下端面协作以提供第三间隙的保持器构件,并且其中第一细间隙和第二细间隙形成有径向动压产生槽,而第三细间隙形成有 推力动压产生槽,第一,第二和第三细间隙填充有润滑油,第一细间隙和第二细间隙具有一端,其开口端与空气接触,另一端形成为封闭端连通 相互通过第三个细微差距。

    Hydraulic dynamic pressure bearing motor
    5.
    发明授权
    Hydraulic dynamic pressure bearing motor 有权
    液压动压轴承电机

    公开(公告)号:US06552456B2

    公开(公告)日:2003-04-22

    申请号:US09996830

    申请日:2001-11-29

    IPC分类号: H02K708

    摘要: A hydraulic dynamic pressure bearing motor has a rotational shaft mounted to undergo rotation about a rotational axis and having a shaft section and a flange section. A sleeve has a cavity for receiving the rotational shaft. A cover member is disposed over an open end of the sleeve cavity. A hydraulic dynamic pressure bearing includes minute radial and thrust clearances disposed between outer surface portions of the shaft and flange sections of the rotational shaft and inner surface portions of the sleeve and the cover member. A lubricating fluid is disposed in the minute radial and thrust clearances. The minute radial and thrust clearances are dimensioned so that during a non-rotational state of the rotational shaft, the flange section of the rotational shaft contacts preselected inner surface portions of the sleeve and the cover member while the shaft section of the rotational shaft does not contact any portion of the sleeve and an inner peripheral surface of the cover member.

    摘要翻译: 液压动压轴承马达具有安装成绕旋转轴线旋转并具有轴部和凸缘部的旋转轴。 套筒具有用于接收旋转轴的空腔。 盖构件设置在套筒空腔的开口端上。 液压动压轴承包括设置在轴的外表面部分和旋转轴的凸缘部分以及套筒和盖部件的内表面部分之间的微小的径向和推力间隙。 润滑流体以微小的径向和推力间隙设置。 微小的径向和推力间隙的尺寸使得在旋转轴的非旋转状态期间,旋转轴的凸缘部分接触套筒和盖构件的预选的内表面部分,而旋转轴的轴部分不 接触套筒的任何部分和盖构件的内周表面。

    Apparatus for preventing circumferential overspeeding of a grinding wheel
    6.
    发明授权
    Apparatus for preventing circumferential overspeeding of a grinding wheel 失效
    用于防止砂轮圆周超速的装置

    公开(公告)号:US4090331A

    公开(公告)日:1978-05-23

    申请号:US797616

    申请日:1977-05-17

    IPC分类号: B24B47/18

    CPC分类号: B24B47/18

    摘要: An apparatus for preventing circumferential overspeeding of a grinding wheel is provided in which a first rejection pin, opposed to the circumferential surface of the grinding wheel, is linked with a second rejection pin through a link mechanism. A slide plate, guided by a cover device for covering a pulley belt connection portion, is engaged with the second rejection pin to be moved therewith radially of a first or second drive pulley being alternatively mounted on a drive motor. When the first rejection pin is manipulated from the forward end to the retraction end of a slot, prior to the mounting of a fresh grinding wheel, the slide plate moves a restraining pin provided thereon into a space to be occupied by the second drive pulley, larger than the first one, so that the fresh grinding wheel can be prevented from being driven by means of the second pulley.

    摘要翻译: 提供了一种用于防止砂轮周向超速的装置,其中与砂轮的圆周表面相对的第一排斥销通过连杆机构与第二排出销连接。 由用于覆盖皮带轮连接部分的盖装置引导的滑板与第二排斥销接合,以随着第一或第二驱动皮带轮径向地移动,交替地安装在驱动马达上。 当第一排出销从槽的前端到缩回端被操纵时,在安装新的砂轮之前,滑板将设置在其上的限制销移动到被第二驱动带轮占据的空间中, 大于第一滑轮,使得可以防止新鲜的砂轮通过第二滑轮驱动。

    Health promoting appliance
    7.
    发明授权
    Health promoting appliance 失效
    健康促进器具

    公开(公告)号:US07264871B2

    公开(公告)日:2007-09-04

    申请号:US10912147

    申请日:2004-08-06

    摘要: This invention provides a germanium-containing health promoting appliance which is used by making it into contact with the skin, which is produced at low cost without requiring the after-machining. The health promoting appliance is made of a sintered material composed of 2 to 20% by mass of germanium and the remainder of stainless steel, the fine pores of which are desirably sealed up by a resinous material and it is produced by sintering a green compact of desired shape of powder mixture of the above composition, under the rate of temperature rise of 10° C. per minute or less from 800° C. to the retaining temperatures of sintering at 1000 to 1300° C.

    摘要翻译: 本发明提供一种含锗健康促进器具,其通过使其与皮肤接触而被使用,该皮肤以低成本生产而不需要后加工。 健康促进器具由烧结材料制成,烧结材料由2〜20质量%的锗和其余的不锈钢制成,其细孔优选用树脂材料密封,并且通过烧结生坯 所需形状的上述组成的粉末混合物,以每分钟10℃或更低的温度升高至800℃至1000至1300℃下的烧结保持温度。